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Table 8 Raw scores for PKU (N = 50–56) and controls (N = 49); Highlighted results are significantly different between the two groups (see Table 2)

From: Adult cognitive outcomes in phenylketonuria: explaining causes of variability beyond average Phe levels

 

PKU raw score

Controls raw score

Mean

SD

Mean

SD

Visual attention RTs

 Simple Detection - ms.

329.3

49.9

315.5

52.0

 Detention with Distractors – ms.

464.2

93.0

411.8

63.8

 Feature Search – ms.

661.5

217.9

532.2

98.5

 Conjunction Search m.

1062.7

246.6

878.3

165.4

Visual attention accuracy

 Detention with Distractors - % errors

0.8

1.0

0.6

0.9

 Feature Search - % errors

1.6

3.5

1.5

2.1

 Conjunction Search - % errors

2.2

3.5

1.6

4.5

Visuo-motor coordination

 Pegboard (sec.)

73.6

13.1

67.6

7.9

 Digit Symbol (%errors in 90 s.)

38.9

11.7

26.0

10.0

 Trail-Making Test A: (sec.)

27.6

12.0

23.8

9.6

 Executive functions

  WCST

 Total errors

13.9

7.7

11.9

5.2

 Perseverative responses

7.7

4.5

7.2

4.0

 N of Completed Categories

3.9

1.1

4.3

0.9

Trail-Making Tests

 B (sec.)

56.2

29.2

45.9

17.5

 B-A (sec.)

28.7

23.2

22.1

13.2

Verbal Fluency

 Letter (correct answers)

37.0

11.1

44.0

11.9

 Semantic (correct answers)

20.9

5.7

24.4

4.52

Short term memory

 Digit span

6.0

1.0

6.3

1.0

 Corsi Block span

5.5

0.9

5.4

1.0

Sustained attention

 RVP (% of errors)

20.6

11.8

14.3

9.1

Learning

  Rey Auditory Verbal Learning Test

 Trial A1-A5 (% errors)

22.8

10.4

20.2

7.5

 Retention (% errors A6)

17.9

14.5

12.9

13.8

 Delayed Recall (% errors)

14.0

14.3

11.2

13.4

Paired Associate Visual learning

 (% errors)

2.8

3.3

1.7

1.7